<template> 
  <div>
    <el-upload
      :action="useOss?ossUploadUrl:minioUploadUrl"
      :data="useOss?dataObj:null"
      list-type="picture"
      :multiple="false" :show-file-list="showFileList"
      :file-list="fileList"
      :before-upload="beforeUpload"
      :on-remove="handleRemove"
      :on-success="handleUploadSuccess"
      :on-preview="handlePreview">
      <el-button size="small" type="primary">点击上传</el-button>
      <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过10MB</div>
    </el-upload>
    <el-dialog :visible.sync="dialogVisible">
      <img width="100%" :src="fileList[0].url" alt="">
    </el-dialog>
  </div>
</template>
<script>
  import {policy} from '@/api/oss'
  import Axios from 'axios';

  export default {
    name: 'singleUpload',
    props: {
      value: String
    },
    computed: {
      imageUrl() {
        return this.value;
      },
      imageName() {
        if (this.value != null && this.value !== '') {
          return this.value.substr(this.value.lastIndexOf("/") + 1);
        } else {
          return null;
        }
      },
      fileList() {
        return [{
          name: this.imageName,
          url: this.imageUrl
        }]
      },
      showFileList: {
        get: function () {
          return this.value !== null && this.value !== ''&& this.value!==undefined;
        },
        set: function (newValue) {
        }
      }
    },
    data() {
      return {
        dataObj: {
          policy: '',
          signature: '',
          key: '',
          ossaccessKeyId: '',
          dir: '',
          host: '',
          // callback:'',
        },
        dialogVisible: false,
        useOss:true, //使用oss->true;使用MinIO->false
        ossUploadUrl:'http://api_devs.wanxikeji.cn/api/admin/advertAddModify',
        minioUploadUrl:'http://api_devs.wanxikeji.cn/api/admin/advertAddModify',
      };
    },
    methods: {
      emitInput(val) {
        this.$emit('input', val)
      },
      handleRemove(file, fileList) {
        this.emitInput('');
      },
      handlePreview(file) {
        this.dialogVisible = true;
      },
      beforeUpload(file) {
        if(!this.useOss){
          //不使用oss不需要获取策略
          return true;
        }
        return Axios({
          url:'http://api_devs.wanxikeji.cn/api/admin/advertAddModify',
          method:'post',
          data:{
            token:localStorage.getItem('token'),
            // tltle:'',
            // pic:'',
            // url:'www.baidu.com'
          }
        }).then((res)=>{
          let _self = this;
          console.log(res);
          this.dataObj.policy = res.data.policy;
          this.dataObj.signature = res.data.signature;
          this.dataObj.ossaccessKeyId = res.data.accessKeyId;
          this.dataObj.key = res.data.dir + '/${filename}';
          this.dataObj.dir = res.data.dir;
          this.dataObj.host = res.data.host;
            // _self.dataObj.callback = response.data.callback;
        }).catch(err=>{
          console.log(err);
        })
        // return new Promise((resolve, reject) => {
        //   policy().then(response => {
            // _self.dataObj.policy = response.data.policy;
            // _self.dataObj.signature = response.data.signature;
            // _self.dataObj.ossaccessKeyId = response.data.accessKeyId;
            // _self.dataObj.key = response.data.dir + '/${filename}';
            // _self.dataObj.dir = response.data.dir;
            // _self.dataObj.host = response.data.host;
            // // _self.dataObj.callback = response.data.callback;
        //     resolve(true)
        //   }).catch(err => {
        //     console.log(err)
        //     reject(false)
        //   })
        // })
      },
      handleUploadSuccess(res, file) {
        this.showFileList = true;
        this.fileList.pop();
        let url = this.dataObj.host + '/' + this.dataObj.dir + '/' + file.name;
        if(!this.useOss){
          //不使用oss直接获取图片路径
          url = res.data.url;
        }
        this.fileList.push({name: file.name, url: url});
        this.emitInput(this.fileList[0].url);
      }
    }
  }
</script>
<style>

</style>


